Bubble detecting apparatus for medical infusion device

Details Bubble detecting apparatus for medical infusion device Bubble detecting apparatus for medical infusion device

1989-06-29

1995-02-28

Williams, Hezron E.

Measuring and testing

Liquid analysis or analysis of the suspension of solids in a...

Content or effect of a constituent of a liquid mixture

738655, G01N 1502

Patent

active

053926382

ABSTRACT:
A bubble detecting apparatus for an infusion pump, including a set of ultrasonic sensor constituted by an ultrasonic oscillator and a receiver provided, respectively, at opposed locations on an outer face of a liquid transport tube for feeding liquid such as medicinal liquid by a predetermined pumping operation of a pumping mechanism such that air bubbles produced in or mixed into the liquid in the liquid transport tube are detected by the ultrasonic oscillator and the receiver. In the apparatus, at least three sets of the ultrasonic sensors are arranged along the liquid transport tube at different intervals.

REFERENCES:
patent: 3153727 (1964-10-01), Nathan
patent: 3974681 (1976-08-01), Namery
patent: 4068521 (1978-01-01), Cosentino et al.
patent: 4658244 (1987-04-01), Meijer
patent: 4763525 (1988-08-01), Cobb

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